 The Spc42p associates with Spc110p and Spc29p, two other essential coiled-coil proteins that localize to the nuclear face of the SPB.Spc110 localizes to the central plaque and is thought to bind to Spc29p and calmodulin (Cmd1p).The role of Spc110p is a spacer molecule between the central and inner plaque and γ-tubilin complex binding protein.